Would you leave a job where your own employer thinks less of you and you heard her saying to your other colleague that you are not smart and clumsy?

She also makes fun of me sometimes. It can be light however it still affect my self esteem and when I am willing to do any new task, she would secretly suggest my superior to not choose me because of fear that i would not perform well. Also when I want to speak to the customer, she wouldn't trust me of doing that alone and always ask other colleague to company me in case i say something wrong *she doesn't do this to other colleague.

I guess it has something to do with my personality, because im still young. But i still think this is toxic.

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Extra infos:

I’ve been working in this company for 4 years. They always reach me for help to proofread, and I always receive good feedbacks from customer regarding my services. My employer is aware of this.
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At the same time she keeps increasing my salary! And i do admit that she's giving me good package but at the same time treat me like a clown. My self respect is at the bottom of my shoes, but I couldnt get the same package of salary if i leave this job which is the only reason holding me back.

*my salary is above the average market and a bit difficult to demand
Would you leave a job where your own employer thinks less of you and you heard her saying to your other colleague that you are not smart and clumsy?
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